The semi-truck driver, accused of causing a deadly pile-up along the 10 Freeway in Ontario last month, appeared in court again Friday as prosecutors dropped the DUI charges against the man.

The preliminary hearing for Jashanprett Singh, 21, lasted all day in a Rancho Cucamonga courtroom as prosecutors outlined their case while Singh’s defense attorney questioned nearly every detail.

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As new details were revealed during the hearing, a detective testified about Singh’s cellphone data analysis, saying his phone had been in use in the minutes leading up to the crash.

“There was usage through the application of WhatsApp as well as the notes application on the phone,” the detective said during the hearing.

And a motor ca

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